Connecticut's electronics manufacturing sector thrives on innovation and precision, producing vital components for various industries like aerospace, medical, and telecommunications. Companies here range from large corporations to smaller family-run enterprises, all focusing on advanced manufacturing techniques, quality assurance, and customer collaboration. Significant investment in technology drives growth, fostering a competitive edge amid rising demand for smarter, connected solutions. As companies adapt to evolving market needs, sustainability efforts and automation are becoming critical aspects of production strategies, ensuring that Connecticut remains a key player in the global electronics market.


This list highlights 20 electronics manufacturing companies in Connecticut, featuring a mixture of large firms like HARMAN International and smaller entities such as Imperial Electronic Assembly. Founded between 1932 and 2016, these companies are located across various cities, including Stamford, Brookfield, and East Hartford. With sizes ranging from small teams to substantial organizations, they provide specialized services such as printed circuit board assembly, RF components, and custom engineering solutions.


Read on to discover the top electronics manufacturing companies in Connecticut.


Top 20 Electronics Manufacturing Companies in Connecticut


1. HARMAN International

  • Website: harman.com
  • Ownership type: Corporate
  • Headquarters: Stamford, Connecticut, United States (USA)
  • Employee distribution: India 43%, United States (USA) 14%, China 7%, Other 36%
  • Latest funding: $8.0B, November 2016
  • Founded year: 1980
  • Headcount: 10001+
  • LinkedIn: harman-international

HARMAN International Industries, Inc. is an audio electronics company based in Stamford, Connecticut, founded in 1980. The company designs and engineers connected products and solutions tailored for automakers, consumers, and enterprises. HARMAN's product offerings include a wide range of audio products, infotainment systems, and digital transformation solutions. They cater to various industries, particularly automotive and entertainment, providing advanced navigation and infotainment solutions that enhance user experiences. HARMAN is recognized for its commitment to innovation, having received multiple accolades for engineering excellence. As a wholly-owned subsidiary of Samsung, HARMAN retains its leadership team and continues to operate with a focus on integrating technology into everyday life. Their global workforce, with a significant presence in India, the USA, and other countries, underscores their operational scale and reach.


2. Imperial Electronic Assembly

  • Website: impea.com
  • Ownership type: Family Owned
  • Headquarters: Brookfield, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1989
  • Headcount: 201-500
  • LinkedIn: imperial-electronic-assembly-inc-

Imperial Electronic Assembly, based in Brookfield, Connecticut, is a family-owned electronic contract manufacturer established in 1989. With a workforce of around 36 employees, the company has carved out a niche in providing high-quality manufacturing services. Their offerings include printed circuit board (PCB) assembly, cable assembly, and electro-mechanical services, catering to industries such as medical devices, military applications, telecommunications, and energy. Imperial prides itself on its customer-centric approach, emphasizing strong relationships and collaborative engineering support. The company operates from a 45,000 square foot facility, equipped with state-of-the-art technology to ensure efficient production and high standards of quality. Their certifications, including ISO 9001:2015 and AS9100D, reflect their commitment to maintaining rigorous quality control processes. Imperial's focus on continuous improvement and investment in automation technologies positions them well within the electronics manufacturing sector.


3. Tornik, LLC

  • Website: tornik.com
  • Ownership type: Private
  • Headquarters: East Hartford, Connecticut, United States (USA)
  • Founded year: 1990
  • Headcount: 51-200
  • LinkedIn: tornik-llc

Tornik, LLC, founded in 1990 and based in East Hartford, Connecticut, is a private electronic manufacturing company that specializes in custom cable assemblies, harness assemblies, and electromechanical assemblies. With a workforce of 51-200 employees, Tornik serves various industries, including medical devices, aerospace, and telecommunications. The company operates with a strong focus on quality, as evidenced by its ISO 9001:2015 and ISO 13485:2016 certifications, along with UL and CSA certifications. Tornik's manufacturing processes are designed to ensure high reliability and efficiency, with each assembly undergoing 100% computerized testing. Their facilities in Connecticut and Tijuana, Mexico, allow them to offer competitive pricing and flexibility in production. Tornik's engineering team plays a crucial role in supporting clients throughout the product development lifecycle, from design to production, which further solidifies their position in the electronics manufacturing industry.


4. Kimchuk, INC.

  • Website: kimchuk.com
  • Ownership type: Private
  • Headquarters: Danbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1964
  • Headcount: 51-200
  • LinkedIn: kimchuk

Kimchuk, INC. is an electronic manufacturer based in Danbury, Connecticut, specializing in contract manufacturing and engineering design services. Established in 1964, the company has built a reputation for delivering high-quality electronic components and assemblies. Their service offerings include PCB assembly, mechanical assembly, and comprehensive testing services. Kimchuk primarily serves military and telecom organizations, which require precision and reliability in their electronic components. The company is committed to customer satisfaction and quality assurance, as evidenced by their AS9100 certification. With a workforce of around 80 employees, Kimchuk has maintained a strong presence in the industry for over five decades, adapting to technological advancements and evolving customer needs. Their recent investments in state-of-the-art testing equipment further enhance their capabilities, ensuring they remain competitive in the market.


5. Carlton Industries Corporation (CIC)

  • Website: cicems.com
  • Ownership type: Private
  • Headquarters: Hamden, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1994
  • Headcount: 11-50
  • LinkedIn: carlton-industries-corporation

Carlton Industries Corporation (CIC), based in Hamden, Connecticut, is a private electronics manufacturer that has been operational since 1994. With a workforce of 11 to 50 employees, CIC specializes in printed circuit board assembly (PCBA) and box build assembly, catering to a variety of sectors including industrial, aerospace, and medical. The company prides itself on delivering high-quality manufacturing services that meet the specific requirements of its clients. CIC operates under stringent quality standards, holding certifications such as ISO 9001, AS 9100, and ISO 13485, which reflect their commitment to excellence. Their facility in the United States ensures that all projects are completed domestically, which helps in maintaining quality control and reducing lead times. CIC's focus on high-mix, high-complexity, low to mid-volume production positions them well within the electronics manufacturing landscape, allowing them to serve clients with unique and varied needs.


6. General Digital Corporation

  • Website: generaldigital.com
  • Ownership type: Private
  • Headquarters: East Hartford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1973
  • Headcount: 51-200
  • LinkedIn: general-digital-corporation

General Digital Corporation, based in East Hartford, Connecticut, is an electronics manufacturer that has been operational since 1973. The company specializes in creating rugged displays, workstations, and software development services tailored for safety-critical industries, including military, medical, aerospace, and industrial sectors. With a workforce of approximately 54 employees, General Digital prides itself on its ability to deliver reliable solutions designed to withstand harsh environments. Their manufacturing facility is certified under ISO 9001:2015, ensuring that their products meet stringent quality standards. The company emphasizes custom product development, allowing them to cater to specific client needs while maintaining compliance with various industry regulations. Their engineering expertise spans hardware, software, and embedded systems, making them a comprehensive provider for clients requiring robust electronic solutions.


7. OSDA Printed Circuit Board Assembly

  • Website: osda.com
  • Ownership type: Corporate
  • Headquarters: Milford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: October 2022
  • Founded year: 1987
  • Headcount: 11-50
  • LinkedIn: osda

OSDA Printed Circuit Board Assembly, based in Milford, Connecticut, has been a key player in the electronics assembly industry since its inception in 1987. The company specializes in rapid prototyping and manufacturing services, serving a variety of sectors including Medical, Robotics, and Military & Defense. With a workforce of 11-50 employees, OSDA prides itself on delivering high-quality assembly solutions with quick turnaround times, often within one to three days. Their facility is equipped with state-of-the-art technology and is certified under ISO 13485:2016 and ISO 9001:2015, ensuring that they meet rigorous quality standards. OSDA has built strong relationships with notable clients such as NEC Energy Solutions and Harman International, showcasing their ability to handle complex assembly projects. Their focus on customer service and technical expertise positions them as a reliable partner for businesses needing dependable electronic components.


8. Presco Engineering

  • Website: prescoinc.com
  • Ownership type: Private
  • Headquarters: Woodbridge, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1978
  • Headcount: 11-50
  • LinkedIn: presco-inc-

Presco Engineering, Inc. is an engineering and manufacturing firm based in Woodbridge, Connecticut, with a focus on developing mission-critical products for high-stakes industries, including military, medical, and biotech sectors. Founded in 1978, the company has built a reputation for delivering reliable and innovative solutions. Their services span electronics engineering, software engineering, mechanical engineering, and industrial design, all conducted within their state-of-the-art facility. Presco's commitment to quality is underscored by their ISO 9001:2015 certification, ensuring that their manufacturing processes meet rigorous standards. The company has a proven track record of transforming complex ideas into market-ready products, leveraging advanced technologies such as Field Programmable Gate Arrays (FPGAs) to enhance product performance. With a dedicated team and a collaborative approach, Presco Engineering continues to support clients in navigating the challenges of product development and manufacturing.


9. Accutron

  • Website: accutroninc.com
  • Ownership type: Corporate
  • Headquarters: Windsor, Connecticut, United States (USA)
  • Employee distribution: India 62%, United States (USA) 38%
  • Latest funding: August 2016
  • Founded year: 1989
  • Headcount: 51-200
  • LinkedIn: accutron-inc-

Accutron Inc., founded in 1989 and based in Windsor, Connecticut, is a contract manufacturer that specializes in electronic printed circuit board assembly (PCBA). The company offers a comprehensive range of services, including Surface Mount Technology (SMT) assembly, Thru-Hole assembly, and Box Build assembly. Accutron primarily serves clients in the military, commercial, and medical electronics sectors, emphasizing high-quality manufacturing solutions tailored to meet specific client needs. With a workforce of approximately 98 employees, the company operates a state-of-the-art facility that ensures accuracy and efficiency in production. Accutron is committed to quality assurance and adheres to strict compliance standards, including ITAR regulations. Recently, Accutron became part of Foxtronics EMS, which broadens its capabilities and enhances its position in the electronics manufacturing industry.


10. Microphase Corporation USA

  • Website: microphase.com
  • Ownership type: Venture Capital
  • Headquarters: Shelton, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: Seed, $945,000, April 2013
  • Founded year: 1955
  • Headcount: 51-200
  • LinkedIn: microphase-corporation-usa

Microphase Corporation USA, based in Shelton, Connecticut, is a technology manufacturer that specializes in RF, Microwave, and Millimeter-wave products. Since its inception in 1955, the company has been dedicated to designing and producing advanced electronic technology solutions tailored for defense, aerospace, and commercial markets. Their product offerings include a wide array of components and systems that serve critical applications, particularly in telecommunications and public safety. Microphase has a history of innovation, having contributed to significant projects such as the Mercury Space Capsule in 1961. The company prides itself on its customer-focused approach, ensuring high reliability and performance in its products. With a workforce of skilled professionals, Microphase continues to invest in research and development, positioning itself for future growth and technological advancements.


11. Scott Electrokrafts, Inc.

  • Website: scottelectro.com
  • Ownership type: Private
  • Headquarters: Andover, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1967
  • Headcount: 11-50
  • LinkedIn: scott-electrokrafts-inc.

Scott Electrokrafts, Inc., based in Andover, Connecticut, is a contract manufacturer that has been operational since 1967. The company specializes in electronic and electromechanical assemblies, providing services such as PC board assembly, cable and harness assembly, and system integration. They cater primarily to sectors like military, aerospace, and medical equipment, ensuring that their products meet stringent quality standards. Scott Electrokrafts is committed to customer satisfaction, offering timely delivery and adherence to technical specifications. Their certifications, including AS9100 D and ISO 9001:2015, reflect their dedication to quality management. The company operates with a focus on both prototype and production quantities, making them a flexible partner for clients looking to enhance their manufacturing capabilities.


12. COMET Technologies USA, Inc.


COMET Technologies USA, Inc., based in Shelton, Connecticut, is a technology company that has been operational since 1992. The firm specializes in RF power delivery systems and components, focusing on precision control of plasma processes. Their products, including RF generators, impedance matching networks, and vacuum capacitors, are essential for industries such as semiconductor manufacturing and flat panel display production. By providing advanced solutions, COMET helps manufacturers enhance production efficiency and reliability. The company serves a niche market, catering primarily to manufacturers who rely on their expertise to optimize complex plasma processes. With a workforce of approximately 148 employees, COMET Technologies continues to innovate and support the evolving needs of the electronics manufacturing sector.


13. Amphenol RF

  • Website: amphenolrf.com
  • Ownership type: Private
  • Headquarters: Danbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 55%, China 17%, Mexico 11%, Other 17%
  • Founded year: 1932
  • Headcount: 1001-5000
  • LinkedIn: amphenol-rf

Amphenol RF, based in Danbury, Connecticut, is a manufacturer that specializes in RF connectors, adapters, and cable assemblies. Founded in 1932, the company has built a reputation for providing essential connectivity solutions across various industries, including telecommunications, automotive, and military. With a workforce of approximately 239 employees, Amphenol RF operates globally, with a notable presence in the United States, China, Mexico, India, and the Netherlands. Their extensive product offerings cater to the growing demands of modern technology, including applications in 5G wireless, smart cities, and advanced drone systems. The company emphasizes quality and innovation, ensuring that their products meet the rigorous standards required in critical applications. Amphenol RF's commitment to serving diverse markets positions them as a key player in the RF connectivity sector.


14. Conard Corporation

  • Website: conardcorp.com
  • Ownership type: Private
  • Headquarters: Glastonbury, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1965
  • Headcount: 11-50
  • LinkedIn: conard-corporation

Conard Corporation, founded in 1965 and based in Glastonbury, Connecticut, is a manufacturing company that specializes in precision photochemical machining. The company offers a range of services, including aluminum etching and metal fabrication, primarily serving industries such as aerospace, electronics, medical, and power generation. Conard is recognized for its engineering support and rapid prototyping capabilities, which help clients navigate complex manufacturing challenges. The company is AS9100 Rev D and ISO9001 certified, ensuring adherence to high-quality standards. With a focus on environmentally responsible operations, Conard utilizes aqueous etching technologies and has received recognition for its commitment to sustainability. Their expertise in photo etching has made them a key player in the production of precision metal parts, particularly in the aerospace and electronics sectors, where they provide components like aluminum heatsinks for avionics applications.


15. Synectic Medical Product Development (A MACK Molding Company)


Synectic Medical Product Development, a subsidiary of MACK Molding Company, is based in Woodbridge, Connecticut. Founded in 1981, the company specializes in product development, particularly in the medical device and electronics sectors. They offer a full suite of services that includes product strategy, design, prototyping, and manufacturing. Their expertise extends to electronic design, ensuring that products are not only functional but also compliant with industry standards. Synectic has worked with a variety of clients, helping them navigate the complexities of bringing innovative products to market. Their affiliation with the Mack Group enhances their manufacturing capabilities, allowing them to leverage extensive resources for contract manufacturing and quality assurance. With a team of experienced engineers, Synectic has developed numerous products, contributing to their reputation in the industry.


16. The Phoenix Company of Chicago

  • Website: phoenixofchicago.com
  • Ownership type: Private
  • Headquarters: Naugatuck, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 75%, China 25%
  • Founded year: 1969
  • Headcount: 51-200
  • LinkedIn: phoenix-company-of-chicago

The Phoenix Company of Chicago, Inc. is a private manufacturer based in Naugatuck, Connecticut, established in 1969. The company specializes in RF and microwave contact solutions, cable assemblies, and connectors. They cater to a range of industries, including military, aerospace, medical, and research, providing high-performance products designed for reliability in demanding applications. Their product offerings include PkZ microwave contacts, non-magnetic connectors, and custom solutions tailored to specific client needs. The Phoenix Company emphasizes quality through its certified ISO 9001:2015 Quality Management System, ensuring that all products meet rigorous standards. Their focus on customer satisfaction and on-time delivery has made them a trusted partner in the electronics manufacturing sector.


17. Tiger Enterprises Inc.

  • Website: tigerstamping.com
  • Ownership type: Private
  • Headquarters: Southington, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1979
  • Headcount: 11-50
  • LinkedIn: tiger-enterprises-inc-

Tiger Enterprises Inc., based in Southington, Connecticut, has been a family-owned business since its founding in 1979. With a workforce of 11 to 50 employees, the company specializes in precision metal stamping, producing high-quality metal components and assemblies. They serve various industries, including electronics and military specifications, showcasing their capability to meet stringent quality standards. Their services include metal stamping, in-house tooling and engineering, custom packaging, and prototype development. Notably, they are a Colt Certified Manufacturing Facility, which underscores their commitment to quality and precision. Tiger Enterprises operates from a facility in Plantsville, CT, where they leverage advanced manufacturing techniques to deliver reliable products. Their focus on customer service and adaptability allows them to cater to unique project requirements, making them a valuable partner in the manufacturing process.


18. Microtech Inc

  • Website: microtech-inc.com
  • Ownership type: Corporate
  • Headquarters: Cheshire, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: August 2002
  • Founded year: 1955
  • Headcount: 51-200
  • LinkedIn: microtech-inc

Microtech Inc, founded in 1955 and based in Cheshire, Connecticut, is a manufacturer specializing in the design and production of flexible and rigid waveguide assemblies, as well as passive microwave components. The company serves both military and commercial customers, providing essential components for radar, satellite, and communication systems. With a focus on quality, Microtech operates under ISO-9001 and AS-9100 certifications, ensuring that their products meet stringent industry standards. Their capabilities include in-house design, manufacturing, and quality control, allowing them to respond effectively to customer needs. Microtech's products are utilized in various applications, from cell phone towers to military aircraft, showcasing their relevance in the electronics sector. They have not reported any recent funding, indicating a self-sustaining business model that has thrived for decades.


19. Able Coil & Electronics Co., Inc.


Able Coil & Electronics Co., Inc. is a private manufacturing company based in Bolton, Connecticut, specializing in custom electromagnetic assemblies and components. Established in 1969, the company has built a strong foundation in the electronics manufacturing sector, providing high-quality products tailored to the specifications of various industries. Their clientele includes sectors such as military, medical, automotive, and communications, showcasing their ability to meet stringent requirements across different applications. With a focus on collaboration, Able Coil emphasizes engineering support throughout the product development cycle, ensuring that they deliver solutions that align with customer needs. Their manufacturing facility spans 20,000 square feet and is equipped to handle both high and low volume production runs, utilizing advanced winding techniques and in-house tooling capabilities. This allows them to produce a wide range of products, including custom coil assemblies, transformers, and electromechanical assemblies. Able Coil's commitment to quality and continuous improvement has enabled them to ship millions of components annually, reinforcing their position in the electronics manufacturing industry.


20. Neeltran Inc

  • Website: neeltran.com
  • Ownership type: Corporate
  • Headquarters: New Milford, Connecticut, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: $16.4M, May 2021
  • Founded year: 1973
  • Headcount: 51-200
  • LinkedIn: neeltran-inc

Neeltran Inc, based in New Milford, Connecticut, has been a prominent player in the power electronics manufacturing sector since its founding in 1973. The company specializes in the design and production of transformers and rectifiers tailored for various industrial applications, including aluminum smelting and chemical processing. With a workforce of approximately 76 employees, Neeltran emphasizes high-quality, reliable power solutions that cater to the specific needs of its clients. Their manufacturing process is notable for its integrated testing capabilities, which ensure that products are thoroughly evaluated before shipment. This approach minimizes integration issues and reduces commissioning time for clients. Neeltran is also ISO-9001-2015 certified, reflecting their commitment to quality management. The company operates under the umbrella of American Superconductor (AMSC), further solidifying its position in the industry. In May 2021, Neeltran secured $16.4 million in funding, indicating ongoing investment in their operations and growth.



Electronics Manufacturing Insights: Key Companies in Connecticut


CompanyHeadquarterSizeFoundedOwnership
HARMAN InternationalStamford, Connecticut, United States (USA)10001+1980Corporate
Imperial Electronic AssemblyBrookfield, Connecticut, United States (USA)201-5001989Family Owned
Tornik, LLCEast Hartford, Connecticut, United States (USA)51-2001990Private
Kimchuk, INC.Danbury, Connecticut, United States (USA)51-2001964Private
Carlton Industries Corporation (CIC)Hamden, Connecticut, United States (USA)11-501994Private
General Digital CorporationEast Hartford, Connecticut, United States (USA)51-2001973Private
OSDA Printed Circuit Board AssemblyMilford, Connecticut, United States (USA)11-501987Corporate
Presco EngineeringWoodbridge, Connecticut, United States (USA)11-501978Private
AccutronWindsor, Connecticut, United States (USA)51-2001989Corporate
Microphase Corporation USAShelton, Connecticut, United States (USA)51-2001955Venture Capital
Scott Electrokrafts, Inc.Andover, Connecticut, United States (USA)11-501967Private
COMET Technologies USA, Inc.Shelton, Connecticut, United States (USA)51-2001992Private
Amphenol RFDanbury, Connecticut, United States (USA)1001-50001932Private
Conard CorporationGlastonbury, Connecticut, United States (USA)11-501965Private
Synectic Medical Product Development (A MACK Molding Company)Woodbridge, Connecticut, United States (USA)11-501981Corporate
The Phoenix Company of ChicagoNaugatuck, Connecticut, United States (USA)51-2001969Private
Tiger Enterprises Inc.Southington, Connecticut, United States (USA)11-501979Private
Microtech IncCheshire, Connecticut, United States (USA)51-2001955Corporate
Able Coil & Electronics Co., Inc.Bolton, Connecticut, United States (USA)51-2001969Private
Neeltran IncNew Milford, Connecticut, United States (USA)51-2001973Corporate


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